Choosing EXO sanding caps: 10 or 13 mm, grit 80 or 150 and the correct holder
- 16 min reading time
Prohaar Magazine editorial team · Product details and sources checked on 14 October 2026.
Choosing EXO sanding caps starts with three separate specifications: cap diameter, abrasive grit and the holder that carries the cap. Two current Prohaar products illustrate why all three matter: the EXO Blue Med Hard Cap in 10 mm, grit 150 and the EXO Blue Med Hard Cap in 13 mm, grit 80. Both are blue, both are supplied in packs of twenty disposable caps and both belong to the EXO range. They are not interchangeable versions of an identical component: the outside diameter and abrasive grade are different.
For the 10 mm/150 cap, look for a holder specifically sized for 10 mm caps. The 13 mm/80 cap needs a 13 mm holder. The current EXO pedicure set, SKU 155852, provides a documented example of the second arrangement: twenty 13 mm grit-80 caps, one 13 mm rubber holder with a 2.32 mm shank, and five filters. Shank diameter is yet another measurement. Knowing that a shank is 2.32 mm does not, on its own, prove compatibility with a particular drill handpiece.
A useful order therefore describes the complete part: “EXO Blue Med, 10 mm, grit 150, twenty disposable caps, verify 10 mm holder” or “EXO Blue Med, 13 mm, grit 80, twenty disposable caps, verify 13 mm holder”. The original manufacturer information for the 13 mm version gives a maximum of 10,000 rpm. That value is not a general treatment setting for all sanding caps or all handpieces. Equipment instructions and component-specific limits must also be checked before any professional application.
1. Why diameter, grit and holder cannot be combined into one number
Diameter is the physical size of the cap, in this case 10 or 13 millimetres. Grit, sometimes called grain or gradation, describes the abrasive coating. The holder, also known as a carrier or mandrel, is the separate component that supports the removable cap. Correct grit does not fix the problem of an incorrectly sized holder. Equally, having a holder of the required diameter does not automatically establish that its shank fits the handpiece. A reliable purchase considers each interface rather than relying on a short marketing description.
Consider the marking “13 mm / 80 / 20 pcs”. The 13 refers to cap diameter, 80 to abrasive grade and 20 to quantity in the package. None of those figures identifies the diameter of the holder shank or specifies a rotational speed. The label “10 mm / 150 / 20 pcs” follows the same structure. A stockroom where both products are filed under “blue EXO caps” obscures precisely the information needed when somebody is asked to reorder them.
The contents of the purchase also matter. A standalone pack of twenty caps is not automatically a kit containing a holder. A kit that includes filters, a holder and caps is a different product with a different purchasing purpose. Establish whether you are replenishing disposable caps while retaining a verified existing holder, or whether you still need to identify and obtain a suitable holder. The colour blue and the brand name do not answer either question.
2. Ten millimetres versus thirteen: a fit measurement first
The nominal 10 mm cap is smaller than the 13 mm cap. This difference affects the holder size and the size of the available working surface. A professional might consider a smaller format when choosing equipment for a more restricted area, whereas a larger format offers a different contact geometry. However, neither dimension alone determines what should be done to a particular person's skin. Clinical assessment, professional qualifications and the original instructions remain separate from the commercial choice of cap size.
If your existing holder is marked 13 mm, do not assume that a 10 mm replacement will fit because it comes from the same EXO Blue Med family. Conversely, a 13 mm cap should not be treated as the correct replacement for an existing 10 mm holder simply because the shank looks similar. Compare the cap size specified for the holder, then confirm the condition of the holder and the connection required by the handpiece manufacturer. A photograph of the assembled accessory cannot replace those checks.
Prohaar also lists separate rubber holders for 10 mm and 13 mm sanding caps. Their current descriptions identify a shank measuring 2.32 mm. The holder included in the EXO set is explicitly 13 mm with a 2.32 mm shank. Those details establish which measurements can be compared; they are not a blanket promise that every professional nail drill accepts these components. An exact handpiece model and its operating instructions are required before asserting that the assembly is compatible.
A practical arrangement is to label the stock by diameter rather than only by product colour. Use separate positions for “EXO 10 mm / 150 / SKU 149685” and “EXO 13 mm / 80 / SKU 149688”. If several EXO cap ranges are present, include the full range description as well. If a product card differs from the marking on the existing holder, keep the combination unconfirmed until the documentation has been compared.
3. What grit 80 and grit 150 actually describe
The original EXO descriptions call grit 80 coarse and grit 150 medium. The same product family also uses 60 for very coarse and 220 for fine. These figures explain the naming system; they do not establish that every possible combination of diameter, grit and construction is currently available. Here, the verified comparison is between an actual 10 mm/150 pack and an actual 13 mm/80 pack. Each has twenty individual caps and its own traceable product code.
For purchase purposes, grit identifies the abrasive coating rather than the cap size or the handpiece. The manufacturer's product description associates the coarser 80 grade with work involving hard skin and the medium 150 grade with evening the skin surface. Such descriptions are indications of the product's intended abrasive character, not clinical instructions to remove particular lesions, not a recommended amount of tissue removal and not advice on treating a specific foot condition.
Do not translate the numerical difference into unsupported promises. A grade of 150 cannot be declared universally safer, painless or better simply because the number is larger. Nor does grade 80 establish the quickest or most suitable option for every client. Actual use depends on professional assessment, the condition being addressed, the complete equipment arrangement and its instructions. This article deliberately does not specify pressure, contact time, pass count or a step-by-step callus-removal technique.
4. The holder, its front size and its shank are not the same thing
A sanding cap sits on a holder, while the holder connects to a compatible handpiece. The cap outside diameter and the holder's corresponding cap size form one fit relationship. The holder shank and the receiving handpiece form another. A shank of 2.32 mm therefore does not mean that the cap is 2.32 mm wide, or that a 10 mm cap and a 13 mm cap can use the same carrier. When reviewing specifications, keep both interfaces visible.
For EXO's current set with SKU 155852, the manufacturer and Prohaar specify a 13 mm rubber holder, a 2.32 mm shank and twenty 13 mm/80 Blue Med caps. That is a documented combination within this particular set. It should not be expanded into a claim that every 13 mm cap from another series, or every drill with a superficially similar chuck, is suitable. Exact model identification and the manufacturer's compatibility information are still needed for other pairings.
For SKU 149685, a buyer should identify a holder expressly specified for 10 mm sanding caps. If an existing holder has no readable marking, cannot be identified or shows damage, a new box of caps alone does not resolve the uncertainty. Establish the identity and condition of the carrier before use. Follow the device's original attachment and inspection instructions rather than a generic procedure from a shopping article. A matching nominal diameter is a necessary check, not a certificate for the whole system.
The holder should also be distinguished from disposable material. The manufacturer instructs the user to discard the used abrasive cap. That does not mean the holder must automatically be discarded with every cap. Equally, it would be inappropriate to invent cleaning, sterilisation or reuse rules for the holder. Those conditions belong to its own instructions and the professional setting in which it is used.
5. Three current Prohaar products compared side by side
The two standalone packs share several verified features: blue abrasive caps, cosmetic corundum as the abrasive material and a composite Hard Cap core. Their defining differences remain measurable rather than promotional. SKU 149685 is a pack of twenty caps measuring 10 mm with grit 150. SKU 149688 is a pack of twenty caps measuring 13 mm with grit 80. The outside colour alone is not an adequate item identifier, and neither standalone pack is described as including a holder.
SKU 155852 serves a different purpose. It is the EXO pedicure set with five filters for specified EXO extraction-equipped drills, one rubber holder of 13 mm and twenty 13 mm/80 Blue Med caps. The set is useful here because it supplies a documented holder-to-cap example, not because its filters alter the rules for selecting replacement caps. If you only need disposable refills and already have an appropriate verified carrier, a set with filters should not automatically become your replacement product.
| Prohaar item | Cap diameter | Grit | Supplied contents | Holder included? |
|---|---|---|---|---|
| EXO Blue Med Hard Cap, SKU 149685 | 10 mm | 150, medium | 20 caps | No |
| EXO Blue Med Hard Cap, SKU 149688 | 13 mm | 80, coarse | 20 caps | No |
| EXO pedicure set, SKU 155852 | 13 mm | 80, coarse | 20 caps, 1 holder, 5 filters | Yes, 13 mm, 2.32 mm shank |
The exact identity of the filter-compatible drill is a separate issue. The previous Prohaar Magazine article covers the set's filters and its components as an inventory check. This new article is specifically about deciding which replacement cap and holder size to order. A verified filter fit does not establish the cap fit, and a verified holder size does not establish compatibility with a particular machine. Keeping those questions apart makes the product comparison more useful.
6. Maximum speed: a limit tied to the specified 13 mm product
The manufacturer states a maximum of 10,000 rpm for the documented 13 mm sanding caps. The current Prohaar card for SKU 149688 and the EXO set card repeat this limit for the 13 mm components. The manufacturer notes that operating above it may cause vibration in the micromotor and shorten its operating life. This is an equipment limit stated for a product size, not a suggested working speed or a guarantee that use below it is safe under every condition.
There is an important gap in the other product's technical information. The original manufacturer page inspected for the individual 10 mm/150 cap does not independently specify an equivalent maximum speed for that cap. A separate 10 mm rubber holder listed by Prohaar has its own speed information; however, that is information about the holder rather than confirmation that the cap has exactly the same published limit. Do not copy a limit from one diameter, product type or holder to every cap in the drawer.
For a real installation, every applicable original instruction must be considered, including the cap, holder, handpiece and machine. The most restrictive verified conditions cannot be ignored, and missing conditions must be resolved rather than replaced with a guess. “Up to 10,000 rpm” is not a treatment recipe. It specifies neither a suitable working speed for a given client nor appropriate pressure, time, technique or sequence.
Other marketing descriptions do not change this. A water-resistant abrasive and a composite core do not prove that every electrical handpiece is designed for wet operation. Nor do they establish guaranteed freedom from heat, vibration or discomfort. Avoid unsupported safety claims when discussing accessory selection. Precise identification of the component and an accurate statement of the documented limit are considerably more useful to professional buyers.
7. Single-use caps and a reliable stock process
The original EXO instructions say that a used abrasive cap must be discarded. Each of the twenty caps in a standalone pack is therefore a disposable consumable, not an item to be washed and passed to the next client. Cleaning or disinfecting a used cap does not rewrite that product instruction. Dispose of used material under the applicable practice procedures and waste requirements. The holder should be managed separately according to its own maintenance and replacement instructions.
Store unused caps by full specification. A label reading “Blue Med / 10 mm / 150 / 149685” is immediately distinguishable from “Blue Med / 13 mm / 80 / 149688”. Keep used materials away from unused stock according to professional hygiene arrangements. Where multiple ranges have similar blue caps, the SKU is particularly useful because it identifies the exact current product rather than a general colour or family resemblance.
A pack size of twenty is not a verified statement that twenty complete treatments can be performed. Consumption depends on the professional procedures and material requirements of a particular practice; the reviewed documentation gives no dependable universal number of caps per treatment. Review actual consumption by SKU before setting a reorder point. Do not assume that both diameters sell through or are used at the same rate merely because the packs contain the same quantity.
8. From specifications to a defensible purchase decision
Start by defining the immediate requirement. Are you replacing used caps of a type already confirmed for your equipment, changing abrasive grade or building a second holder arrangement? For a straightforward refill, confirm the same SKU and version. For a new size, confirm the cap diameter and corresponding holder first, then the shank and exact handpiece conditions. Grit selection is an additional professional material decision, not a substitute for mechanical compatibility.
Review the 10 mm/150 product card and the 13 mm/80 product card separately. The EXO collection at Prohaar can help identify other product types, but do not treat a neighbouring listing as interchangeable without checking it. For a documented example of a 13 mm holder supplied with the correct cap size, consult the EXO pedicure set. Check the current package description and product code in the basket before ordering; prices and availability can change and are not the basis of this comparison.
The Prohaar editorial team presents a buying guide based on identified current products and original manufacturer details. It is not a clinical procedure or an independent safety test. If a person's foot condition requires assessment, product information cannot replace appropriate professional or medical judgment. Before using any accessory, consult its current instructions together with the documentation for the handpiece and its operating environment.
Frequently asked questions about EXO sanding caps
Does grit 80 mean a cap diameter of 80 mm?
No. Grit 80 identifies the abrasive grade of SKU 149688. The actual cap diameter is 13 mm and the pack contains twenty caps. These figures should be recorded in separate specification fields.
Can a 10 mm cap be fitted onto the 13 mm holder in the EXO set?
That should not be assumed to be a suitable combination. The set contains a 13 mm holder and 13 mm caps. A 10 mm cap requires a holder specifically intended for that cap size, plus the remaining device checks.
Does the 10 mm/150 cap have a confirmed maximum of 10,000 rpm?
Not from the original individual cap listing reviewed. That limit is expressly documented for the 13 mm cap and set. A separately sold 10 mm holder may have its own limit, which is not proof of an identical cap specification.
Can EXO Blue Med caps be reused after cleaning?
No. The original manufacturer instruction says to discard the cap after use. The holder is a separate component whose maintenance requirements must be checked on its own terms.
Is a holder included in either twenty-cap refill pack?
The two standalone product cards describe twenty caps, not a supplied holder. The EXO pedicure set, SKU 155852, does include one 13 mm holder alongside twenty 13 mm/80 caps and five filters.
What does a 2.32 mm shank measurement tell me?
It describes the holder shank, not the diameter of the abrasive cap. The EXO set includes a 13 mm holder with a 2.32 mm shank. Compatibility with an actual drill handpiece must still be verified against that model's instructions.
Is grit 150 always preferable to grit 80?
No. The manufacturer identifies grit 150 as medium and grit 80 as coarse. They are different abrasive properties, not universal scores for safety or treatment quality. Their use must be determined professionally within a verified equipment combination.
Before ordering, write down diameter, grit and holder as three distinct checks; then verify the shank and device instructions. Compare the EXO 10 mm/150 pack of twenty with the EXO 13 mm/80 pack of twenty, and select a corresponding carrier only when the full connection is documented.
Sources: original EXO/Activeshop product specifications: 10 mm/150, 13 mm/80, set with 13 mm holder.